Mechanical movement.



N 7|6,023 Patented Dec. I6, I902.

L. D. GIBSON.

MECHANICAL movsui'sm.

(Application filed Mar. 22, 1902.)

(No Model.)

UNITED STATES PATENT OFFICE.

LEVI D. GIBSON, OF THURBER, TEXAS, ASSIGNOR OF TVVO-THIRDS TO ROBERTLOFLIN, OF TIIURBER, TEXAS, AND HERMAN F. SOHEER, OF

DALLAS, TEXAS.

M ECHANI CAL MOVEMENT.

SPECIFICATION formingpart of Letters Patent No. 716,028, dated December16, 1902.

Application filed March 22, 1902.

To all whom, it 77l/H/y concern.-

Be it known that I, LEVI D. GIBSON, a citizen of the UnitedStates,residing at Thurber, in the county of Erath and State of Texas,

have invented a new and useful Mechanical Movement, of which thefollowing is a specification.

This invention relates to mechanical movements, and is designed toprovide improved means for producing alternating rotary movements,andwhile this means may be employed for a variety of purposes it isparticularly designed for imparting movement to the dasherstems ofchurns and also to the rubber stems of Washing-machines.

Another object is to convert a continuous rotary movement intoalternating rotary movement, so as to adapt the device for manualoperation through the mediumof a crankhandle and also to arrange thedevice so that it maybe conveniently mounted upon the'top or lid of achurn or washing-machine.

With these and other objects in view'the present invention consists inthe combination and arrangement of parts, as will behereinafter morefully described, shown in the accompanying drawings, and particularypointed out in the appended claims, it being understood that changes inthe form, proportion, size, and minor details may be made within thescope of the claims without departing from the spirit or sacrificing anyof the advantages of the invention.

In the drawings, Figure l is a perspective 5 View of an embodiment ofthe present invention particularly adapted for use in connection withwashing-machines. Fig. 2 is a longitudinal sectional view thereof.

Like characters of reference designate cor- 4o responding parts in bothfigures of the drawings.

Referring to the accompanying drawings, 1 designates a base or support,which in one specific application of the invention may be 5 the lid orcover of a churn or washing-machine. Upon the top of this lid or supportand at one side of the center thereof there is provided a bracket2,which is fastened to the support in any suitable manner and preferablydisposed substantially radially thereof.

Serial No. 99,471. (No model.)

At the outer end of the bracket rises a standard 3, and a correspondingstandard 4 rises from the inner end of the bracket, this latter standardbeing provided with a longitudinal slot 5, which is disposed in the sameplane with the two standards. The top of the standard 3 is provided witha notch or seat 6 for the reception of the operating-shaft, and theupper end of the standard 4 is provided with a lateral extension 7,which is directed away from the standard 3, and is provided in its upperface with a groove 8, the bottom of which lies in alinement with thebottom of the notch or seat 6.

Between the lateral extension 7 and the lid or support is an upstandingrotatable head 9,

which is provided with an upper pivot or trunnion 10, rotatably fittedin asocket or hearing 11, formed in the under side of the extension 7,and the lower end of the head is provided with a trunnion or pivot 12,mounted in the opening 13, formed through the support. It will beunderstood that the lower journal 12 may be extended to form adasherstem, or it may be provided with means for connection with a stemor other part to be rotated; but as this forms no part of the presentinvention it has not been shown in the drawings. Throughout the greaterpart of the length of the head 9 there is formed a spi- 8o ral slot 14;.

A substantially horizontal drive-shaft 15 is mounted in the bearing-seat6 and also in the groove 8, within which it is held by means of suitableinverted-U-shaped straps or bearing-clips 16. At the outer end of thisshaft there is provided a crank-handle 17, and the intermediate portionof the shaft is provided with a double crank 18, which Works between thestandards 3 and 4.

To transfer motion from the crank-shaft to the rotatable head 9 there isprovided aconnecting-rod or link 19, the upper end of which is providedwith a hook or eye 20 to embrace the outer end of the double crank andform a 5 loose or pivotal connection therewith. The lower end of theconnecting-rod or link is provided with a lateral arm 21, which Works inthe guide-slot 5 and also in the spiral slot 14 in the head 9, the outerend of the arm 21 I00 being bent laterally, as indicated at 22, so as tolie transversely across the slot 14, and thereby provide a head or stopto prevent endwise displacement of the arm from the slot.

From the foregoing description it will be understood that power isapplied to the crankhandle 17, so as to rotate the shaft 15, and therebyapply an end wise-reciprocatory move ment to the link or connecting-rod19. The upper end of the connecting-rod of course describes a circlewith the crank 18; but its lower end works verticallyin a substantiallystraight line as the arm 2L is confined within the guide-slot 5, and asthe arm reciprocates vertically and works in the spiral groove 14 thehead 9 will be rotated in one direction during the upward movement ofthe arm and in the opposite direction during the downward movement ofthe arm, whereby alternating rotary movements are imparted to the head 9by a continuous rotary movement of the crank-handle and power-shaft.

It is apparent that the device of the present invention is extremelysimple and is particularly adapted for mounting upon the lid or cover ofa washing-machine or churn in such a manner as to be readily connectedto the stem thereof for operating the dasher or rubber. Furthermore, allof the parts are readily accessible for repairs, whereby it may bemaintained in effective working condition and also be conveniently setup in position for operation.

WVhat I claim is 1. The combination with a base, of a pair of standardsrising therefrom, one of the standards having a longitudinal slot, aspirally-slotted rotatable member mounted upon the base and adjacent tothe outer side of the slotted standard, a power-shaft mounted upon thestandards and having a crank working between the same, a connecting-rodpivoted to the crank and provided with a lateral arm working in the slotof the standard and also in the spiral slot of the rotatable member, anda head carried by the arm and extending transversely across the slot ofthe rotatable member to prevent displacement thereof.

2. The combination with a base, of a pair of standards rising therefrom,one of the standards having a longitudinal slot and also provided at itsupper end with an outwardlydirected lateral extension, a rotatablespirally-slotted member having its upper end journaled in the extensionof the standard and its lower end journaled in an opening formed in thebase, a power-shaft mounted upon the standards and provided with anintermediate crank working between the said standards, a crank-handleupon one end of the shaft, and a connecting-rod having one end pivotedto the crank and its opposite end provided with a lateral arm working inthe slot of one of the standards and also in the spiral slot of therotatable member, the outer end of the arm having a head extendingtransversely across the spiral slot to prevent endwise displacement ofthe arm.

3. The combination with a lid or cover having a central opening, of apair of standards rising from the lid at one side of the openingtherein, the standard which is next to the opening being provided with alongitudinal slot, and a transverse extension at its upper endoverhanging the opening in the lid and provided in its under side with abearingsocket alined with said opening in the lid, an upstandingspirally-slotted rotatable member having a reduced journal at its upperend which is mounted in the socket in the extension of the slottedstandard, the lower end of the rotatable member having a reduced journalprojected through the opening in the lid with its lower extremityadapted for connection with a part to be driven, a power-shaft mountedupon the extension of the slotted.

standard and upon the top of the other standard, and provided with acrank working between the standards, an operating crankhandle carried bythe outer end of the shaft, a connecting-rod pivotally hung from theintermediate crank and provided at its lower end with alaterally-projected arm working in the guide-slot of the standard andalso in the spiral slot of the rotatable member, and a cross-headcarried by the arm and extended across the spiral slot to preventdisplacement of the arm therefrom.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

LEVI D. GIBSON.

Witnesses:

E. H. RHODES, J. H. M. KING.

